78791494118 has 16 divisors (see below), whose sum is σ = 120844077984. Its totient is φ = 38517869760.

The previous prime is 78791494109. The next prime is 78791494139. The reversal of 78791494118 is 81149419787.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1913255 + ... + 1954002.

It is an arithmetic number, because the mean of its divisors is an integer number (7552754874).

Almost surely, 2^78791494118 is an apocalyptic number.

78791494118 is a deficient number, since it is larger than the sum of its proper divisors (42052583866).

78791494118 is a wasteful number, since it uses less digits than its factorization.

78791494118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867487.

The product of its digits is 4064256, while the sum is 59.

The spelling of 78791494118 in words is "seventy-eight billion, seven hundred ninety-one million, four hundred ninety-four thousand, one hundred eighteen".